Home / 198,420.85-273,822.82-107,778.57

Finding the Fourth Proportional to 198,420.85, 273,822.82 and 107,778.57

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Solution

The fourth proportional to 198,420.85, 273,822.82 and 107,778.57 is: 148,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,420.85 : 273,822.82 = 107,778.57 : x
  2. Step 2: Convert to fraction form
    198,420.85/273,822.82 = 107,778.57/x
  3. Step 3: Cross multiply
    198,420.85x = 273,822.82 × 107,778.57
  4. Step 4: Simplify right side
    198,420.85x = 29,512,231,972.97
  5. Step 5: Solve for x
    x = 29,512,231,972.97/198,420.85
  6. Step 6: Final answer
    x = 148,735.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.